In the title compound, C9H11N3S, there is an intra­molecular O-HO hydrogen bond involving the OH group and the adjacent methoxy O atom. The mol­ecule is essentially planar, with the maximum deviation from the mean plane of the non-H atoms being 0.1127 (14) Å for the methyl C atom. In the crystal, mol­ecules are connected via centrosymmetric pairs of N-HS and O-HO hydrogen bonds into a two-dimensional network parallel to (10-3).

Related literature

For the in vitro anti­malarial and anti­tubercular activity of hy­droxy-meth­oxy­benzaldehyde thio­semicarbazone derivatives, see: Khanye et al. (2011). For the first report of the synthesis, see: Freund & Schander (1902). For the synthesis and crystal structure of an isomer of the title compound, see: Hao (2010).

Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: FY2108 ).

Acknowledgements

We gratefully acknowledge financial support by the State of Schleswig-Holstein, Germany. We thank Professor Dr Wolfgang Bensch for access to his experimental facilities. BRSF thanks CNPq/UFS for the award of a PIBIC scholarship and ABO acknowledges financial support through the FAPITEC/SE/FUNTEC/CNPq PPP 04/2011 program.

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